I get this for sure. United is a sad organization. My first impulse was to tear up my frequent flyer card (I often travel to Asia) and mail it back to them. I have however been treated worse by Frontier. As far as I’m concerned, flying on any US airline is an ordeal, simply to be endured.
But let me say that there is absolutely no way you can resist a lawful order by a legal authority. In the thick of the situation I certainly understand how someone would get pretty irate, but a physical confrontation with a law officer is NEVER going to work out in your favor. Dr. Dao was wrong to escalate his resistance to a physical level. He did not ‘deserve’ his treatment, but he is not guilt-free here.